Benefits of a Green Roof
Storm Water Retention
- Summer: 70 – 90 % Storm water Retention
- Winter: 25-40 % Storm water Retention
Water Filtration & Runoff:
- Moderates temperature
- Act as natural filters
- Reduce the amount of storm water runoff
- Decreases stress on sewer systems at peak flow periods
Up to 50% Savings on energy heating and cooling costs
A green roof with a 12 cm (4.7 inches) substrate layer can reduce sound by 40 decibels; a 20 cm (7.9 inches) substrate layer can reduce sound by 46-50 decibels.
Improved Air Quality
Filtration of Airborne Particulates:
- A green roof will absorb heat and filter the air moving across it.
Carbon Dioxide/Oxygen Exchange:
- Through the process of photosynthesis, plants convert carbon dioxide, water and sunlight/energy into oxygen and glucose. This cyclical process supplies animals and humans with oxygen and food.
- 1.5 m2 (16.15 ft2 ) of uncut grass, produces enough oxygen per year to supply 1 human with their yearly oxygen intake requirement.
Temperature Regulation: Moderation of the Urban Heat Island Effect
November 2006, Sedum varieties planted in Green Roof Media
To Learn More about the Green Roof Industry, Visit: Green Roofs for Healthy Cities
Phone Number: 416-971-4494 / Fax Number: 416-971-9844 www.greenroofs.net